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Business and Organization (Details)
12 Months Ended
Dec. 31, 2024
state
class
Office
Vote
Dec. 31, 2023
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Percentage of company consisting of franchises 100.00%  
Number of classes of common stock | class 2  
Common Class A    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Number of votes per share held | Vote 1  
Common Class A | One Company Founder    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Ownership percentage 1.10%  
Motto | Minimum    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Number of offices | Office 220  
Number of states in which entity operates | state 40  
RMCO, LLC    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Parent economic interest in RMCO (as a percentage) 60.20% 59.30%
RMCO, LLC | RIHI    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Non-controlling interest ownership of common units in RMCO 39.80% 40.70%